<!DOCTYPE html>
<html lang="zh">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">

    <title>Title</title>

    <link rel="stylesheet" href="//cdn.bootcss.com/bootstrap/3.3.5/css/bootstrap.min.css">
    <link rel="stylesheet" href="//cdn.bootcss.com/bootstrap/3.3.5/css/bootstrap-theme.min.css">
</head>
<body>
<div class="container-fluid">
    <!-- Static navbar -->
    <nav class="navbar navbar-default">
        <div class="container-fluid">
            <div class="navbar-header">
                <button type="button" class="navbar-toggle collapsed"
                        data-toggle="collapse" data-target="#navbar" aria-expanded="false"
                        aria-controls="navbar">
                    <span class="sr-only">Toggle navigation</span> <span
                        class="icon-bar"></span> <span class="icon-bar"></span> <span
                        class="icon-bar"></span>
                </button>
                <a class="navbar-brand" href="/index">Project name</a>
            </div>
            <div id="navbar" class="navbar-collapse collapse">
                <ul class="nav navbar-nav">
                    <li class="active"><a href="/index">Home</a></li>
                    <li><a href="/index">About</a></li>
                    <li><a href="/index">Contact</a></li>
                    <li class="dropdown"><a href="/index" class="dropdown-toggle"
                                            data-toggle="dropdown" role="button" aria-haspopup="true"
                                            aria-expanded="false">Dropdown <span class="caret"></span></a>
                        <ul class="dropdown-menu">
                            <li><a href="/index">Action</a></li>
                            <li><a href="/index">Another action</a></li>
                            <li><a href="/index">Something else here</a></li>
                        </ul>
                    </li>
                </ul>
            </div>
            <!--/.nav-collapse -->
        </div>
        <!--/.container-fluid -->
    </nav>

    <div class="row">
        <div class="col-md-4"></div>
        <div class="col-md-4 text-center">
            <a class="btn btn-primary" href="/chat" role="button">Chat</a>
            <a class="btn btn-success" href="/notifications" role="button">Notifications</a>
            <a class="btn btn-info" href="/notifications-button" role="button" target="_blank">Link</a>
        </div>
        <div class="col-md-4"></div>
    </div>
</div>

<script src="//cdn.bootcss.com/jquery/1.11.3/jquery.min.js"></script>
<script src="//cdn.bootcss.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
</body>
</html>